Could it be
>! our shadow?

"I communicated with you, not by normal means."

>!Our shadow is there to mimic our moves.

"The illusionist did everything it seems."

>!Shadows are the result of light.

"Proximity can make me very shy."

>!If we try to get close to our shadow, it either shrinks, moves away, or disappears.

"Without a bunch of these you would die."

>!If we cannot cast a shadow, our body does not exist.

"The bee, the seasons, maybe some more,"

>!No idea. I guess because everything is capable of casting a shadow.

"Who am I? All alone, no knock on the door."

>!Our shadows have no one to talk to, they're silent, etc.

As for the "alive, dead, alive, now dead,"
>!our shadows come and go depending on which setting we're in. Sometimes they're there, sometimes they're gone.